Company lists · Data refreshed October 2026

Top 25 Municipal energy planning firms based in the United States

RevenueBase identified 560 company matches for municipal energy planning firms associated with the United States as of October 2026 and tracks 9,182 professional contacts across them, including 3,972 with verified work emails. New York is the largest hub.

This list covers company matches for municipal energy planning firms associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 18, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 18, 2026 How this list was built
560Companies
9,182Contacts tracked
3,972Verified emails
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The 25 largest municipal energy planning firms based in the United States

Ranked by team size
Top 25 of 560 company matches for municipal energy planning firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 18, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchAnaheim, CA, United StatesHQ recorded Oct 18, 20261,001-5,000872 contacts →

Exact match

“Willdan (NASDAQ: WLDN) provides professional consulting and technical services to utilities, public agencies and private industry throughout the United States.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
2Exact matchJacksonville, FL, United StatesHQ recorded Oct 18, 2026201-500604 contacts →

Exact match

“The Energy Authority (TEA®) is the strategic partner of choice in providing energy solutions to public power.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
3Exact matchGainesville, FL, United StatesHQ recorded Oct 18, 2026501-1,000599 contacts →

Exact match

“Gainesville Regional Utilities (GRU) is a multi-service utility owned by the City of Gainesville and is the 5th largest municipal electric utility in Florida.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
4Exact matchIrvine, CA, United StatesHQ recorded Oct 18, 2026201-500387 contacts →

Exact match

“We are Trio – global energy and sustainability advisors.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
5Exact matchKirkland, WA, United StatesHQ recorded Oct 18, 2026201-500281 contacts →

Exact match

“We provide global renewable energy consulting services, focused on empowering clients to navigate the complexities of the energy transition.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
6Exact matchFairfax, VA, United StatesHQ recorded Oct 18, 2026201-500216 contacts →

Exact match

“PEG presents a comprehensive capacity for the evaluation and understanding of a broad base of energy and environmental sustainability related programs, policies and initiatives.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
7Exact matchHalf Moon Bay, CA, United StatesHQ recorded Oct 18, 2026201-500189 contacts →

Exact match

“Resource Innovations now combined with Nexant is a substantially woman-owned, woman-led energy consulting firm dedicated to creating equal access to clean resources through…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
8Exact matchBrooklyn, MD, United StatesHQ recorded Oct 18, 2026201-500182 contacts →

Exact match

“Green World Renewable Energy delivers smart, scalable solar engineering and back-office design solutions for residential, commercial, and utility-scale projects across the U.S.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
9Exact matchVienna, VA, United StatesHQ recorded Oct 18, 202651-200126 contacts →

Exact match

“Celebrating our 30th year of energy industry experience, WGL Energy is a leading retail energy provider offering electricity, natural gas (including certified natural gas), and…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
10Exact matchCleveland, United StatesHQ recorded Oct 18, 2026201-500125 contacts →

Exact match

“The City of Cleveland's Division of Cleveland Public Power provides electric service to approximately residential, commercial, and industrial customers.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
11Exact matchNew York, NY, United StatesHQ recorded Oct 18, 202651-200118 contacts →

Exact match

“Environ Energy is a leader in accelerating global sustainable energy transformation for more than 30 years.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
12Exact matchHouston, LA, United StatesHQ recorded Oct 18, 2026201-500115 contacts →

Exact match

“CenTrio Energy is the leader in providing innovative energy solutions for our clients.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
13Exact matchDenver, CO, United StatesHQ recorded Oct 18, 202651-200104 contacts →

Exact match

“Guzman Energy delivers customized wholesale power solutions that work harder and move faster.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
14Exact matchNew York, NY, United StatesHQ recorded Oct 18, 202651-20097 contacts →

Exact match

“Euclid Power is comprised of a team of industry-leading veterans within renewable energy project development, diligence, finance, and execution with over 10GW of PV and 5GWh of…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
15Exact matchWest Palm Beach, FL, United StatesHQ recorded Oct 18, 202651-20085 contacts →

Exact match

“E.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
16Exact matchBurlington, VT, United StatesHQ recorded Oct 18, 202651-20085 contacts →

Exact match

“As the first city in the nation to source 100% of its power from renewable generation, Burlington Electric Department provides electric service to 16,763 residential customers and…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
17Exact matchBaltimore, MD, United StatesHQ recorded Oct 18, 202611-5078 contacts →

Exact match

“Since 2010, MD Energy Advisors (MDEA) has been infusing art into energy by creating a dynamic customer experience that makes energy choices simple for everyone.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
18Exact matchCambridge, MA, United StatesHQ recorded Oct 18, 202611-5063 contacts →

Exact match

“Synapse Energy Economics, Inc.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
19Exact matchLittle Rock, AR, United StatesHQ recorded Oct 18, 202651-20061 contacts →

Exact match

“Entegrity is an energy services, sustainability and solar development company specializing in the implementation of energy conservation and renewable energy projects.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
20Exact matchCarlsbad, CA, United StatesHQ recorded Oct 18, 202651-20061 contacts →

Exact match

“Founded in 1994, Alternative Energy Systems Consulting, Inc.(AESC) is an energy consultancy that drives solutions in energy efficiency, renewable energy, distributed energy…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
21Exact matchReading, MA, United StatesHQ recorded Oct 18, 202651-20055 contacts →

Exact match

“Established in 1894, Reading Municipal Light Department (RMLD) is a municipal electric utility serving over residents in the towns of Reading, North Reading, Wilmington, and…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
22Exact matchHolyoke, MA, United StatesHQ recorded Oct 18, 202651-20055 contacts →

Exact match

“For over a century, Holyoke Gas & Electric (HG & E) has supplied innovative utility services to customers.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
23Exact matchOakbrook Terrace, IL, United StatesHQ recorded Oct 18, 202611-5051 contacts →

Exact match

“Nordic Energy Services is an independently owned energy management firm specializing in managing our client's natural gas and electric requirements.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
24Exact matchDenver, CO, United StatesHQ recorded Oct 18, 202611-5050 contacts →

Exact match

“Filsinger Energy Partners (FEP) is a premier energy advisory firm delivering sustainable solutions for today’s energy challenges.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
25Exact matchMcclean, VA, United StatesHQ recorded Oct 18, 202611-5044 contacts →

Exact match

“For nearly 40 years, D+R International has been the trusted energy consulting firm of leading organizations and government agencies such as the Department of Energy, Environmental…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase

Showing 25 of 560 municipal energy planning firms based in the United States

See the full list, filter by size, metro and specialty, and access 3,972 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Municipal energy planning firms based in the United States at a glance

As of Oct 18, 2026
43.3%Verified-email coverage
16.4Average contacts per company
1-10Median size (employees)
3.6%Largest-city concentration · New York
Oct 18, 2026Page data refreshed

Companies by employee count

1-10
351
11-50
157
51-200
34
201-500
13
501-1,000
1
1,001-5,000
2
10001+
1

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 560 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “municipal energy planning firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 3,972 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on October 18, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “municipal energy planning firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many municipal energy planning firms are there based in the United States?

RevenueBase identified 560 company matches for municipal energy planning firms associated with the United States as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Willdan tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most municipal energy planning firms?

New York leads with 20 company records, followed by Houston (16) and Austin (10).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 3,972 professional contacts with verified work emails tracked across these 560 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 18, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.